| Abbreviation | Definition |
|---|---|
| ABCCC | All British Classics Car Club |
| ABCF | AIIMS Bhopal Club de Football |
| ABFC | Akshay's Biggest Fan Club |
| ABFL | Alabama Bass Fishing League |
| ABLC | African Business Lawyers Club |
| ABRC | American Baldhead Roller Club |
| ABSC | Albany Berkeley Soccer Club |
| ABSC | Applied Behavioral Science Club |
| ABSC | Athens Bulldog Swim Club |
| AC | Aero Club |
| ACA | l'Automobile Club d'Auvergne |
| ACAC | Ames Cyclone Aquatics Club |
| ACAC | Atlantic Coast Athletic Club |
| ACAC | Atomic City Aquatic Club |
| ACAO | Aero Club Adele Orsi |
| ACB | Asociaci??n de Clubes de Baloncesto |
| ACB | Asociación de Clubes de Baloncesto |
| ACBA | Aéro Club du Bas Armagnac |
| ACBB | Athletic Club de Boulogne-Billancourt |
| ACBC | Addison County Bike Club |